A small cut, blister, or sore on your foot normally begins healing within a reasonable period of time. When a wound remains open, repeatedly returns, or appears to get worse instead of better, there may be an underlying reason.
One potential cause is poor arterial circulation.
Peripheral artery disease, or PAD, can reduce blood flow to the legs and feet and make it more difficult for damaged tissue to heal.
Why Blood Flow Matters for Healing
Healing requires more than bandages and time.
Your bloodstream delivers oxygen, nutrients, immune cells, and other materials needed for tissue repair.
When an artery is significantly narrowed, the affected area may not receive enough blood to support normal healing.
That is why circulation is an important part of evaluating certain chronic foot and leg wounds.
What Does a Circulation-Related Wound Look Like?
A wound caused or complicated by reduced arterial blood flow may occur on the:
- Toes
- Feet
- Heels
- Ankles
- Lower legs
You may also notice other symptoms around the affected area.
These can include:
- Cold skin
- Changes in skin color
- Leg pain during walking
- Foot pain while resting
- Reduced hair growth
- Numbness
- Weak pulses in the feet
Not every wound with these features is caused by PAD, so proper testing is essential.
Diabetes Can Increase the Concern
People with diabetes require particular attention to foot health.
Diabetes can damage nerves, which may reduce your ability to feel a cut, blister, or pressure injury. It is therefore possible for a wound to worsen before you realize it is there.
Diabetes is also closely associated with vascular disease.
For patients who have both nerve problems and reduced circulation, routine foot checks are especially important.
What Happens If Poor Circulation Is Not Addressed?
An untreated wound can become larger or infected.
When severely reduced blood flow causes ongoing rest pain, wounds, ulcers, or tissue loss, a patient may have chronic limb-threatening ischemia, an advanced form of PAD.
This condition requires timely evaluation because the health of the affected limb can be at risk.
Early vascular assessment can help determine whether restoring blood flow should be part of the treatment plan.
How Is Circulation Tested?
A vascular specialist may check the pulses in your legs and feet and review your medical history and symptoms.
Testing may include:
- Ankle-brachial index testing
- Toe pressure testing
- Doppler or duplex ultrasound
- CT angiography
- Magnetic resonance angiography
- Angiography when appropriate
The goal is to determine whether an arterial blockage is preventing adequate blood from reaching the wound.
Treating More Than the Surface
Wound care is important, but a wound may struggle to heal if the underlying blood-flow problem is not addressed.
When PAD is present, treatment may include cardiovascular risk management, medication, smoking cessation, foot and wound care, and procedures designed to restore blood flow when appropriate.
The specific approach depends on the patient’s overall health, severity of disease, and location of arterial blockages.
A Wound That Won’t Heal Deserves Attention
Do not assume that a persistent sore simply needs more time.
If you have a foot or leg wound that is not healing normally, particularly if you also have diabetes, a smoking history, leg pain, or known cardiovascular disease, consider having your circulation evaluated.
At Vascular Centers of America, our team is focused on identifying and treating peripheral artery disease with an emphasis on improving blood flow and protecting limb health.
Contact Vascular Centers of America if you are concerned about a non-healing foot or leg wound and want to learn more about vascular evaluation.